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5 answers

Installing GDAL on Linux Ubuntu Server

apt-get install python-gdal installs version 1.6.0 and this is already installed. I would like to install the 1.9.0 version. Do I have to de-install 1.6.0 first and then compile manually or is there an apt-get package that I have missed?
Robert Buckley
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1 answer

What does OGR stand for?

There are numerous commands and libraries that I see referenced or prefixed with OGR. What does the OGR stand for? ogrinfo ogr2ogr
Evan Carroll
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4 answers

How to polygonize raster to shapely polygons

I am seeking an open-source python solution to convert raster to polygon (no ArcPy). I did know the GDAL function to convert raster to polygon, and here is the manual:…
Vicky Liau
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33
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9 answers

News resources for GIS community?

I currently rely on a mixture of mailing lists, twitter and a couple of blogs. What do you use for your GIS media intake, and why?
scw
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33
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1 answer

Getting legend label on multiple lines in QGIS?

This question was posted in 2011, and someone has said that QGIS now allows multiple lines for legend entries, but no one mentioned how to do this. I am running wein 2.8.1 and I cannot figure out how to get my legend entry on multiple lines other…
T.O.6
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33
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2 answers

How to select features containing specific text string using an expression in QGIS

I need to style a survey parcel polygon shapefile, based on whether the polygon is a mineral claim or not. Unfortunately, the only information on whether a polygon is a mineral claim or not is contained in the "TITLE" field of the attribute table,…
Chris Paul Geo
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33
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1 answer

Storing GeoJSON FeatureCollection to PostgreSQL with PostGIS?

I am new to GeoJSON. I have a GeoJSON features collection as shown and would like to store it in postgres table (testtable). My postgres table has a serial id and geometry column. { "type": "FeatureCollection", "features": [ { …
Jay
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33
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2 answers

What are the Differences Between TMS, XYZ & WMTS?

There are currently three different ways of Serving out Tiles: TMS WMTS XYZ I do know that XYZ is now the most popular one, and is used by services like Google, Mapbox, OSM and many others. What is the Technical difference between the three?
Devdatta Tengshe
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33
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6 answers

Free tool to convert ArcGIS layer package (*.lpk) to shapefile (*.shp)?

I have received a *.lpk file from Esri's ArcGIS platform that I would like to convert to a shapefile. How can I do this, using only free software?
Zach
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33
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3 answers

How to Add OSM Layer to QGIS 2.X

How can i add OSM layer in QGIS? The help says there is an OSM plugin i can use. But i don't see it the list of plugins. Or maybe there is a WMS URL for OSM i can use? QGIS version 1.7.0-Wroclaw on Windows 7 64bit
CaptDragon
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33
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5 answers

Creating fishnet grid Shapefile in QGIS?

How do I create a fishnet shapefile using QGIS? The equivalent task of "Create Fishnet" in ArcGIS.
bcollins
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32
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6 answers

Maximum number of point features in an OpenLayers vector layer

In your experience, how many point features can be added to an OpenLayers vector layer (new OpenLayers.Layer.Vector("Point Layer")) before it goes unusably slow? My use case is to display points from a database table. The user can decide which time…
underdark
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32
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6 answers

Does an earthquake affect GPS?

There are news reports saying that the Sendai earthquake a couple days ago has shifted the earth on its axis and moved the island 8 feet. Last year, there were similar reports with the earthquake in Chile. Does this affect GPS devices at all? Is an…
Rebecca Chernoff
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32
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1 answer

Converting GeoJSON to Shapefile using ogr2ogr?

I have a GeoJson file that I want to convert to ESRI Shapefile using ogr2ogr in FWTools. I tried using ogr2ogr -F "ESRI Shapefile" filename.shp geojsonfile.json OGRGeoJSON I got output ERROR 6: Can't create fields of type StringList on shapefile…
sidd.k
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32
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4 answers

Shapely not installing correctly

I am trying to run Shapely on a new machine, and tried both installing it from source, using the installer on its webpage, and using pip install shapely. Every reference I try to make from the library except from shapely import * throws the error…
dkroy
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